A) 1 m
B) 10 m
C) 0.1 m
D) 100 m
Correct Answer: B
Solution :
\[m=1\,\,kg,g=9.8\,m/{{s}^{2}}\] Total energy of the body\[=8J+90\,J=98J\] At the maximum height, the body possesses only P.E \[\Rightarrow mgh=98\,\,\Rightarrow h=\frac{98}{mg}=\frac{98}{1\times 9.8}=10\,m\] \[P.E.=mgh,\,\,K.E.=1/2\,m{{v}^{2}}\]You need to login to perform this action.
You will be redirected in
3 sec